DM has a red mohawk in some of the photos of him seen online...he is also "a direct descendant of Chief Joseph Brant," the Mohawk leader who aided the British forces during the American Revolution in the mid-1700s.
I looked up the meaning of "red mohawk" and it does have some significance -- possibly to his state of mind when he made the choice to shave and dye his hair that way.
Red Color Meanings and Symbolism: The color of red symbolised violence, war, blood, wounds, strength, energy, power and success in war paint.
http://www.warpaths2peacepipes.com/native-american-symbols/color-meanings-symbolism.htm
The 'Mohawk' Hair style is a form of war preperation by the Kanienkehaka or Mohawk Nation. Shaving one's hair was a both a physical and spiritual declaration of war. Leaving a strip of hair was seen as a sign of armed neutrally but a willingness to show agression.
http://www.blurtit.com/q1958093.html